The Bull Creek Greenbelt is an interesting little path in north central Austin. It's located right off Spicewood Springs and Loop 360 and provides a quick getaway with some varied terrain for biking.
Because this trail is less traveled, it can be overgrown and not very clear in some areas. The path is an easy place for beginners to practice their skills before embarking on more challenging arenas. No climbing is required, and don't forget to watch out for snakes.
Location: North Austin, just off of Loop 360 and Spicewood Springs
Directions: Take Loop 360 west from MoPac to Spicewood Springs road and go south on Spicewood Springs to the first right (about 200 yards from 360), I don't know the name of the street. Go right and follow the road to a parking lot about 200 yards from Spicewood. You can pick up the trail from there. Be careful of the parking lot after dark, that seems to be a meeting place for some unusual figures, so be forewarned.
Technical Level: Low to medium
Links: Official Parks Website